He is also one of Charlie Brown's best friends. On the baseball team, CB pitches and he catches—that just about says it all. Some see Schroeder as a deferential character who is more likely to ask Charlie Brown "what should we do next?" then to take action, which falls well into the pitcher-catcher metaphor.

The exception, of course, is when Lucy hits on him: he screams at her and sends her off in a flying somersault into the next room.

One little-known fact about Schroeder is that the staff drawn above his piano as he plays contains real sheet music for the piece he is playing: in other words, if you play piano, you can actually play from the comic strip. Charles Schulz was anal about this, and would only draw Schroeder's music if he had an actual music book to copy it from.